<template>
    <div>
        <!-- 面包屑导航区域 -->
        <el-breadcrumb separator-class="el-icon-arrow-right">
            <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
            <el-breadcrumb-item>用户管理</el-breadcrumb-item>
            <el-breadcrumb-item>用户列表</el-breadcrumb-item>
        </el-breadcrumb>
        <!-- 卡片视图区域 -->
        <el-card class="box-card">
            <!-- 搜索与添加区域 -->
            <el-row :gutter="20">
                <el-col :span="8">
                    <el-input placeholder="请输入内容" v-model="queryInfo.query" clearable @clear="getUserList">
                    <el-button slot="append" icon="el-icon-search" @click="getUserList"></el-button>
                    </el-input>
                </el-col>
                <el-col :span="4">
                    <el-button type="primary" @click="addDialogVisible=true">添加用户</el-button>
                </el-col>
            </el-row>
            <!-- 用户列表 -->
            <el-table :data="userlist" stripe border>
                <el-table-column type="index"></el-table-column>
                <el-table-column prop="username" label="姓名" ></el-table-column>
                <el-table-column prop="email" label="邮箱" ></el-table-column>
                <el-table-column prop="mobile" label="电话" ></el-table-column>
                <el-table-column prop="role_name" label="角色" ></el-table-column>
                <el-table-column label="状态" >
                    <!-- 用switch显示当前状态mg_state。slot-scope="scope"：作用域插槽是一个带绑定数据的插槽，scope.row用来获取当前行的状态信息；template的效果会覆盖prop="mg_state"，后者可不写-->
                    <template slot-scope="scope">
                        <el-switch v-model="scope.row.mg_state" @change="changeUserState(scope.row)">
                        </el-switch>
                    </template>
                </el-table-column>
                <el-table-column label="操作" width="180px">
                    <template slot-scope="scope">
                        <!-- 修改 -->
                        <el-button type="primary" icon="el-icon-edit" size="mini" @click="showEditDialog(scope.row.id)"></el-button>
                        <!-- 删除 -->
                        <el-button type="danger" icon="el-icon-delete" size="mini" @click="delUserById(scope.row.id)"></el-button>
                        <!-- 分配角色 -->
                        <el-tooltip content="分配角色" placement="top-end" :enterable="false">
                          <el-button type="warning" icon="el-icon-setting" size="mini" @click="setRoleDialog(scope.row)"></el-button>
                        </el-tooltip>
                    </template>
                </el-table-column>
            </el-table>
            <!-- 分页:layout显示所有模块 -->
            <el-pagination
              @size-change="handleSizeChange"
              @current-change="handleCurrentChange"
              :current-page="queryInfo.pagenum"
              :page-sizes="[1, 2, 5, 10]"
              :page-size="queryInfo.pagesize"
              layout="total, sizes, prev, pager, next, jumper"
              :total="total">
            </el-pagination>
        </el-card>
        <!-- 搜索和添加区域 -->
        <el-dialog
          title="添加用户"
          :visible.sync="addDialogVisible"
          width="50%" @close="addDialogClosed">
          <!-- 添加用户表单 -->
          <el-form :model="addForm" :rules="addRules" ref="addFormRef" label-width="70px" >
            <el-form-item label="用户名" prop="username">
              <el-input v-model="addForm.username"></el-input>
            </el-form-item>
            <el-form-item label="密码" prop="password">
              <el-input v-model="addForm.password"></el-input>
            </el-form-item>
            <el-form-item label="邮箱" prop="email">
              <el-input v-model="addForm.email"></el-input>
            </el-form-item>
            <el-form-item label="手机" prop="mobile">
              <el-input v-model="addForm.mobile"></el-input>
            </el-form-item>
          </el-form>
          <span slot="footer" class="dialog-footer">
            <el-button @click="addDialogVisible = false">取 消</el-button>
            <el-button type="primary" @click="addUser">确 定</el-button>
          </span>
        </el-dialog>
        <!-- 修改用户的对话框 -->
        <el-dialog
          title="修改用户"
          :visible.sync="editDialogVisible"
          width="50%" @close="editDialogClosed">
          <el-form :model="editForm" :rules="editFormRules" ref="editFormRef" label-width="70px" >
            <el-form-item label="用户名" >
              <el-input v-model="editForm.username" disabled></el-input>
            </el-form-item>
            <el-form-item label="邮箱" prop="email">
              <el-input v-model="editForm.email"></el-input>
            </el-form-item>
            <el-form-item label="手机" prop="mobile">
              <el-input v-model="editForm.mobile"></el-input>
            </el-form-item>
          </el-form>
          <span slot="footer" class="dialog-footer">
            <el-button @click="editDialogVisible = false">取 消</el-button>
            <el-button type="primary" @click="editUser()">确 定</el-button>
          </span>
        </el-dialog>
        <!-- 分配角色的对话框 -->
        <el-dialog
          title="分配角色"
          :visible.sync="setRoledialogVisible" width="50%" @close="setRoledialogClosed">
          <div>
            <p>当前的用户：{{userInfo.username}}</p>
            <p>当前的角色：{{userInfo.role_name}}</p>
            <p>分配新角色：
              <el-select v-model="slectedRoleId" placeholder="请选择">
                <el-option
                  v-for="item in rolesList"
                  :key="item.id"
                  :label="item.roleName"
                  :value="item.id">
                </el-option>
              </el-select>
            </p>
          </div>
          <span slot="footer" class="dialog-footer">
            <el-button @click="setRoledialogVisible = false">取 消</el-button>
            <el-button type="primary" @click="saveRole">确 定</el-button>
          </span>
        </el-dialog>
    </div>
</template>
<script>
export default {
  data() {
    // 验证邮箱规则
    var checkEmail = (rule, value, cb) => {
      const regEmail = /^([a-zA-Z0-9_-])+@([a-zA-Z0-9_-])+(\.[a-zA-Z0-9_-])+/
      if (regEmail.test(value)) {
        return cb()
      } else {
        cb(new Error('请输入合法的邮箱'))
      }
    }
    // 验证手机号
    var checkMobile = (rule, value, cb) => {
      const regMobile = /^(0|86|17951)?(13[0-9]|15[0123456789]|17[678]|18[0-9]|14[57])[0-9]{8}$/
      if (regMobile.test(value)) {
        return cb()
      }
      cb(new Error('请输入合法的手机号'))
    }
    return {
      // 获取用户列表的参数对象
      queryInfo: {
        query: '',
        pagenum: 1,
        pagesize: 2
      },
      userlist: [],
      total: 0,
      // 控制用户添加的对话框隐藏和显示
      addDialogVisible: false,
      // 添加用户字段
      addForm: {
        username: '',
        password: '',
        email: '',
        mobile: ''
      },
      // 表单验证
      addRules: {
        username: [
          { required: true, message: '请输入用户名', trigger: 'blur' },
          { min: 3, max: 5, message: '长度在 3 到 5 个字符', trigger: 'blur' }
        ],
        password: [
          { required: true, message: '请输入密码', trigger: 'blur' },
          { min: 5, max: 10, message: '长度在 5 到 10 个字符', trigger: 'blur' }
        ],
        email: [
          { required: true, message: '请输入邮箱', trigger: 'blur' },
          { validator: checkEmail, trigger: 'blur' }
        ],
        mobile: [
          { required: true, message: '请输入手机', trigger: 'blur' },
          { validator: checkMobile, trigger: 'blur' }
        ]
      },
      // 修改用户的对话框隐藏和显示
      editDialogVisible: false,
      // 查询用户id获取的对象
      editForm: {},
      editFormRules: {
        email: [
          { required: true, message: '请输入邮箱', trigger: 'blur' },
          { validator: checkEmail, trigger: 'blur' }
        ],
        mobile: [
          { required: true, message: '请输入手机', trigger: 'blur' },
          { validator: checkMobile, trigger: 'blur' }
        ]
      },
      userInfo: {},
      // 分配角色的对话框是否打开
      setRoledialogVisible: false,
      // 角色列表
      rolesList: [],
      slectedRoleId: ''
    }
  },
  created() {
    this.getUserList()
  },
  methods: {
    // 获取用户列表
    async getUserList() {
      const { data: res } = await this.$http.get('users', { params: this.queryInfo })
      // console.log(res)
      if (res.meta.status !== 200) return this.$message.error(res.meta.msg)
      this.userlist = res.data.users
      this.total = res.data.total
    },
    // 获取当前页信息条数
    handleSizeChange(newSize) {
      // console.log(newSize + 'newSize')
      this.queryInfo.pagesize = newSize
      this.getUserList()
    },
    // 获取当前页
    handleCurrentChange(newPage) {
      // console.log(newPage)
      this.queryInfo.pagenum = newPage
      this.getUserList()
    },
    // 监听switch开关状态的改变
    async changeUserState(userInfo) {
      const { data: res } = await this.$http.put(`users/${userInfo.id}/state/${userInfo.mg_state}`)
      // console.log(res)
      if (res.meta.status !== 200) {
        userInfo.mg_state = !userInfo.mg_state
        return this.$message.error('修改状态失败！')
      }
      this.$message.success('修改状态成功！')
    },
    // 监听添加页面对话框的关闭: 重置数据
    addDialogClosed() {
      this.$refs.addFormRef.resetFields()
    },
    addUser() {
      this.$refs.addFormRef.validate(async valid => {
        // console.log('网络请求', valid)
        if (!valid) return
        // 可发起用户的网络请求
        const { data: res } = await this.$http.post('users', this.addForm)
        if (res.meta.status !== 201) {
          this.$message.error('用户创建失败！')
        }
        this.$message.success('用户创建成功！')
        // 隐藏添加用户的对话框
        this.addDialogVisible = false
        // 重载用户列表
        this.getUserList()
      })
    },
    // 展示编辑用户信息的对话框
    async showEditDialog(id) {
      const { data: res } = await this.$http.get(`users/` + id)
      // console.log(res)
      if (res.meta.status !== 200) {
        this.$message.error('查询用户失败！')
      }
      this.editForm = res.data
      this.editDialogVisible = true
    },
    // 监听修改页面对话框的关闭: 重置数据
    editDialogClosed() {
      this.$refs.editFormRef.resetFields()
    },
    // 修改用户信息并提交
    editUser(id) {
      this.$refs.editFormRef.validate(async valid => {
        // console.log(valid)
        if (!valid) return
        // 可发起用户的网络请求
        const { data: res } = await this.$http.put(`users/` + this.editForm.id, { email: this.editForm.email, mobile: this.editForm.mobile })
        // console.log(res)
        if (res.meta.status !== 200) {
          this.$message.error('更新用户失败！')
        }
        // 隐藏添加用户的对话框
        this.editDialogVisible = false
        // 重载用户列表
        this.getUserList()
        this.$message.success('更新用户成功！')
      })
    },
    // 显示删除用户的对话框
    async delUserById(id) {
      const confirmResult = await this.$confirm('此操作将永久删除该用户, 是否继续?', '提示', {
        confirmButtonText: '确定',
        cancelButtonText: '取消',
        type: 'warning'
      }).catch(err => err)
      // console.log(confirmResult)
      if (confirmResult !== 'confirm') {
        return this.$message.info('已取消删除')
      }
      // 删除用户成功
      const { data: res } = await this.$http.delete(`users/${id}`)
      if (res.meta.status !== 200) {
        return this.$message.error('删除用户失败！')
      }
      this.$message.success('删除用户成功！')
      this.getUserList()
    },
    // 打开分配角色的对话框
    async setRoleDialog(userInfo) {
      this.userInfo = userInfo
      const { data: res } = await this.$http.get('roles')
      // console.log(res)
      if (res.meta.status !== 200) {
        return this.$message.error('分配角色失败！')
      }
      this.$message.success('分配角色成功！')
      // 角色列表赋值
      this.rolesList = res.data
      this.setRoledialogVisible = true
    },
    // 更新角色
    async saveRole() {
      if (!this.slectedRoleId) return this.$message.error('请选择要分配的用户角色')
      const { data: res } = await this.$http.put(`users/${this.userInfo.id}/role`, { rid: this.slectedRoleId })
      // console.log(res)
      if (res.meta.status !== 200) return this.$message.error(res.meta.msg)
      this.$message.success('更新角色成功')
      this.getUserList()
      this.setRoledialogVisible = false
    },
    // 关闭对话框后清空数据
    setRoledialogClosed() {
      this.slectedRoleId = ''
      this.userInfo = {}
    }
  }
}
</script>
